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All Journal JURNAL SELULOSA Kinetika JUSTE (Journal of Science and Technology)
Martha Aznury
Politeknik Negeri Sriwijaya
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Materials Science & Nanotechnology

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Review Artikel VARIASI PRODUKSI BIOETANOL DARI AMPAS TEBU Rizki Nurjanah; Martha Aznury
KINETIKA Vol. 12 No. 2 (2021): KINETIKA 01072021
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Bioethanol is ethanol made from plants that contain starch, sugar and other cellulosic plants. The general methods used are hydrolysis and anaerobic fermentation methods. This review aims to compare the results of several studies on the manufacture of bioethanol from various raw materials and the treatment of variations in fermentation pH, type of yeast, and fermentation time. Based on the studies that have been carried out, it can be concluded that the largest yield of bioethanol yields is found in research conducted by Guiherme et al. (2019) showing that the yield of bioethanol from bagasse is 88% w / v with. with alkaline pretreatment hydrolysis and anaerobic fermentation methods using the enzymes Kluyveromyces marxianus and Saccharomyces cerevisiae. Then the second largest result was found in research according to Goshandrou et al. (2014) which produced a percent ethanol of 81% v / v from bagasse. with hydrolysis and anaerobic fermentation methods through the Zygomicetes enzyme.
ANALISIS PENGGUNAAN LIMBAH B3 SPENT BLEACHING EARTH SEBAGAI BAHAN BAKAR ALTERNATIF DI PT. SEMEN BATURAJA (PERSERO) TBK: Limbah B3, Spent Bleaching Earth (SBE), Bahan Bakar Alternatif, Rotary Kiln, Clinker Robiansyah; Mustain; Martha Aznury; Safaruddin
KINETIKA Vol. 13 No. 03 (2022): KINETIKA 01112022
Publisher : Politeknik Negeri Sriwijaya

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Abstract

Hazardous waste of Spent Bleaching Earth (SBE) which is processed by PT. Semen Baturaja (Persero) Tbk is used asan alternative fuel to replace coal, whose price continues to rise, because SBE still contains oil in it. However, the useof hazardous waste of SBE can affect the specific heat consumption needed in the operation of the rotary kiln machineand the ash content in it can affect the quality of the clinker produced. With the percentage of SBE alternative fuelmixture to coal fuel of 0%, 1,12%, 2,07%, 3,13%, 4,09%, 4,93%, 6,13% and 6,88%, the analysis carried out on ofspecific heat consumption, fuel cost efficiency, rotary kiln machine operation and its effect on the quality of the clinkerproduct produced. From the results of this case study, with an increase in the percentage of the SBE mixture, the ashvalue of the mixed fuel trend to increase but is not significant, while the calorific value of this fuel mixture trend todecrease. The conclusion that can be drawn from the use of hazardous waste of SBE as an alternative fuel with amixture percentage of 0% to 6.88% is that as the fuel mixture ratio increases, specific heat consumption decreases,fuel cost efficiency increases, fuel requirements become lower, compared to not using hazardous waste of SBEalternative fuel and has no significant effect on the quality of the clinker product produced.Key words: Hazardous waste, Spent Bleaching Earth (SBE), Alternative fuel, Rotary kiln, Clinker
Pengaruh Metanol dalam Produksi Biodiesel dari Tamanu Oil Menggunakan Katalis Lipase Martha Aznury; Ahmad Zikri; Robert Junaidi; Marieska Lupikawaty; Chintia Oktariyensi
JURNAL SELULOSA Vol 12, No 01 (2022): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25269/jsel.v12i01.360

Abstract

Biodiesel is a fuel derived from renewable sources, wich can be used efficiently in petrodiesel engines. This study aims to produce biodiesel from tamanu oil enzymatically using the lipase enzyme. This enzimatic method has a high value product made during the production of biodiesel. Biodiesel production through the transesterification process with methanol reactant and alkaline catalysts has many weaknesses, namely the presence of a saponification reaction and it is difficult to separate because the catalyst is homogeneus. The result of this study indicate that tamanu oil has been seccessfully converted into biodiesel with an optimum oil : methanol molar ratio of 1:5 and a yield precentage of 87,67% with a methyl ester content of 97,37%
Analisa Perubahan Waktu terhadap Kualitas Hasil Pengeringan Daun Kelor (Moringa oleifera) menggunakan Photovoltaic Tray Dryer Martha Aznury; Muhammad Delika Maulidi; Selastia Yuliati
JUSTE (Journal of Science and Technology) Vol. 1 No. 2 (2021): JUSTE
Publisher : LLDIKTI WIlayah XII Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.701 KB) | DOI: 10.51135/justevol1issue2page175-181

Abstract

Tanaman Kelor adalah salah satu tanaman paling luar biasa yang pernah ditemukan. Salah satu khasiat yang bisa diambil dari pohon kelor terdapat pada daunnya. Daun kelor yang sudah dikeringkan memiliki kandungan gizi yang lebih banyak. Mengingat hal tersebut, maka dirancanglah alat photovoltaic tray dryer yang merupakan alat pengering yang memanfaatkan sinar matahari melalui Photovoltaic Solar Energy System (SESF). Photovoltaic tray dryer dengan kapasitas empat rak dengan berat 100 gram daun kelor per rak. Sebelum melakukan proses pengeringan, daun kelor dilakukan pengujian kadar air awal. Proses pengeringan dilakukan pada variasi waktu yaitu 30, 60, 90, 120, 150, 180, 210, dan 240 menit selama empat jam pada pengeringan dengan suhu 60°C. Setiap 30 menit daun kelor ditimbang. pada rak 1, 2, 3 dan 4 untuk menentukan kadar air. Kadar air daun kelor kering yang diharapkan setelah dikeringkan kurang dari 10%. Kadar air daun kelor pada tiap nampan mulai dari rak 3, 2, 2, dan 4  masing-masing adalah42,48%, 44,16%, 64,80% dan 69,92%. Efisiensi pengeringan mengalami penurunan, dengan efisiensi 30 menit sebesar 26,99% dan efisiensi 240 menit sebesar 14,28%.
Variasi Fungsi Penerapan Ekoenzim dari Limbah Organik: Tinjauan Literatur Muhammad Daffa Fadlurrahman; Martha Aznury
JURNAL SELULOSA Vol 12, No 02 (2022): JURNAL SELULOSA
Publisher : Center for Pulp and Paper

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25269/jsel.v12i02.373

Abstract

Various Application of Eco-enzymes from Organic Waste: A ReviewAbstractRecycling is an effective waste-handling method to utilize. One of the products of the process of recycling is eco-enzymes. Eco-enzymes is a fermented liquids from mixed organic waste and molasses. The eco-enzymes fermentation process usually takes 90 days or more to produce the optimal number of enzymes. In our daily life, eco-enzymes could be used for various applications. Eco-enzyme’s abilities to reduce various impurities in water makes eco-enzymes an alternative water purification. Aside from being a water purification, eco-enzymes can also be used as hand sanitizers and disinfectants because they have bactericidal properties. Ecoenzymes can also be used as fertilizers and soil conditioners because they contain high levels of nitrogen, phosphorus, potassium, and so many other benefits.Keywords: eco-enzymes, function, applicationAbstrakDaur ulang merupakan metode penanganan sampah yang efektif untuk digunakan. Salah satu produk dari proses daur ulang ialah ekoenzim. Ekoenzim merupakan cairan hasil fermentasi dari limbah organik dan molase. Proses fermentasi ekoenzim biasanya sekitar 90 hari atau lebih untuk menghasilkan enzim yang optimal. Dalam kehidupan sehari-hari, ekoenzim dapat dimanfaatkan untuk berbagai hal. Kemampuan ekoenzim mengurai berbagai unsur pengotor air menjadikan ekoenzim sebagai salah satu alternatif media penjernih air. Selain sebagai media penjernih air, ekoenzim juga dapat dimanfaatkan sebagai panyanitasi tangan (hand sanitizer) dan disinfektan karena memiliki sifat bakterisid. Ekoenzim juga dapat dimanfaatkan sebagai pupuk dan pembenah tanah karena mengandung nitrogen, fosfor, dan kalium yang cukup tinggi serta masih banyak manfaat lainnya.Kata Kunci: ekoenzim, fungsi, penerapan 
Co-Authors Ahmad Zikri Chintia Oktariyensi Marieska Lupikawaty Muhammad Daffa Fadlurrahman Muhammad Delika Maulidi Mustain Rizki Nurjanah Robert Junaidi Robiansyah Safaruddin Selastia Yuliati